US1658808A - Drill column with coaxial power line - Google Patents

Description

D. C. KLAUSMEYER `ET AL DRILL COLUMN Vv'IIII1 COAXIAL POWER LINE Feb, 14, 192s.

` Filedct. 17. 1924 4 sheets-sheet 1 (y. L MKM-MM Feb.y 14, 1928. AA1,658,808

D. C. KLAUSMEYER ET AL DRILL COLUMN WITH cAXIAL POWER LINE Filed Oct. 1'?. 1924 4 Sheets-Sheet 2 Z. lg Z1 15 "Il a :Il w 6 14 j 12 12\ I ,.3 11\ 'Il i110 lo. /1'

i 17"' l y 3mm/nto@ Feb. 14, 1928. 1,658,808

D. C. KLAUSMEYER ET AL DRILL COLUMN WITH COAXIAL POWER LINE Filed Oc'k 17. 1924 4 Sheets-Sheet 3 i 18 Feb. 14, 1928. 1,658,808

D. c. KLAUsMEYr-:R ET AL DRILL COLUMN WITH COAXIAL POWER LINE Filed @QL 17. 1924 4 Sheets-Sheet 4 E 81 a7- I (i1 A-65 d@ d SZ 40, l

Eglz. "C

do, -J

vwentom Sli/tow Patented Feb. 14, 1928.

ressens UNITED STATES PATENT oFEicE.

DAV) i3.l KLAUSME'YER, OF CNCNNATI, AND VICTOR JULIEN, OF il'OB/"iOlill), OHIO,

ASSEGEGRS TO THE CINCINNATI BICKFORD TOOL COll/IPNY,` OF OAKLEY, CINCIN- NATI, OHIO, .A OORPORA'JION OF OHIO.

DRLL COLUMN WITH CO'AXIALv POWER- LINE.

appucasion inea octiier rz, i924. srii No. 744,196.

rl`his invention relates to machine-tools and more particularly to m-ians for effecting the introduction and distribution of power to operate the various mechanism thereoil and for supplyingjr cutting lubricant to the tool. rEhe invention is particularly adaptable to radial drills and therefore it will be disclosed in connection with that type ot' machinetool as illustrating one of its practical embodiments.

Radial drills,v as commonly constructed, comprise a base, a two-partcolumn, an arm extending radially from the column and a drill-head slidably mounted on the arm and carrying a drill-supporting spindle. The arm is usually adapted to be moved vertically on a sleeve forming apart et the column and the sleeve with its attached arm may be swung horizontally about the axis of the column. These machine-tools are also provided with means for clamping the sleeve" and arm against circular movementwabout the axis oi" the column and means for continuously supplying cutting lubricant to the tool.

ln a certain type of radial drill the column rises ,trom the center of a long base upon which the work may be secured at opposite sides of the column. In the operation of this type ot radial drill one piece of work is se-v cured to the base at one side of the column while another piece is being drilled at the opposite side, the arm being swung horizontally to bring` the drill first to one drill-` live-red to the tool continuously during' the drilling operation. One of the preferred clamping means for machines of this type is trmclosed in United States Patent to llausnieyer, No. 1,070,8l5dated August 19, llll, in which the clamp is actuated by fluid pressure under the control ot a lever located in a position where it is readily accessible to the operator when he is stationed at his work.

Heretet'ore considerable diiliculty has been experienced in the operation of these machinetools havingl circularly moving arms due to the fact that current to rotate the motor and fluid pressure to actuate the arm twist the wires running to the motor and likewise twist the usual iiexible conductor for the iiuid pressure for `the arm clamp. Furthermore. these power and pipe lines have heretofore been located in positions in which they were more or less in the way of the operator and also of the arm and were therefore a constant source of annoyance. The pipe line for the cutting lubricant also has usually been exposed and subject to the twisting action vcaused by rotation of the radial arm.

llhisinvention has for an object toprovide in a machine-tool improved means for introducing power into the machine and for so distributing it to the various points Where it is utilized, that `the conveying means for the power will not obstructy or restrict the operation of the machine-tool and `will not be in the operators way. further object is so to construct a radial drill of the type hereinbcfore referred to vthat the radial ariniuay be swung about the axis of the column without twisting or otherwise ai'lfecting the power lines and the means forsupplying cutting lubricant to the tool,

These objects have been `attained by ,so

forming the base and post et a machine-tool that the power lines andcutting lubricant may be broughtinto the machine at the base part indicated in the following description and in `part rendered apparent therefrom in connection with the annexed drawings.

To enable others skilled in the art sofully to .apprehend the underlying features hereof that they may embody the same in the various ways contemplated by this invention, drawings depictingapreferred typical conotruction have been annexed as a part of this disclosure and, in such drawings, like characters of reference 4denote corresponding parts throughout all theviews, of" which Fig. l is an eleva-tion, partly in section, of aportioniof a radial drill embodying the present invention. Fig. 2 is a vertical section of the upper end of the sleeve and postand `showing ythe means for holding the power `and lubricantpipes, later to bc referred to. F ig. 3 is aldetail elevation of the means for effecting a. flow of cutting lubricant and the Vrelief line which permits the pump to be actuated even when the lubricant discharge. nozzle is closed. Fig. il

a detail section on the. line 44 of Fig. l.l

section on Fig. 5. is an enlarged vertical means for the line 5-5 of Fig. 4t showing supporting certain air and lubricant pipes and electrical contacts vlater to ber referred to. Fig. 6 is a central section of a pump relief valveshown in Fig. 2e Fig. 7 is a vertical section showing one means for preventing relative rotation betweenthe power.

line housing tube and the sleeve. Fig. 8 is a horizontal section on the line8-8 of Fig.

7. Fig. 9 is an enlarged 'central vert-ical section.r of the rotatable connection showing a.L slightly modifiedconstruction. Fig. l() is a detail section showing the means :for attaching to housing-tube an air and coolant connecting-block later to be referred to. Fig. ll is a front view of a portion of a radial drill showing the fluid pressure controlled clamping mechanism `for clamping the sleeve to the post. Fig. l2 is view of the lower portion of Fig. 'il looking in the direction of the arrow T in Fig. ll. Figs. lfand `14 are detail views of portions of the clamp actuating mechanism. A

Referring more particularly to the drawings the `invention is disclosedin aradial drill comprising a base l upon which mounted a post 2 forming a stationary part of a" vertically disposed column designated generally as C. .A rotatable sleeve 3 is supported upon the upper end of the post by means of an anti-friction thrust-bearing 5 Vand is maintained coaxial therewith at its sembling, it is preferably made as a part of a separate cap 3* adapted to be secured to the upper end of the lsleeve as clearly shown in Fig. 2.

A radial arm 4l is adjustnbly .secured upon the sleeve 3 and carries the usual driILhcarl, (not shown). Any suitable meanI inay he provided for translating the arm vertically on the sleeve and for locking it in its ad.- justed position. 'lhc sleeve. and ita attached arm are adapted to be rotated about the axis of the post 2` and when the arm has been brought to the desired position the sleeve :may oc loclied to the post to prevent further movement of the arm. ln the present type of 1nachinetool this locking is preferably effected by a fluid pressure 'actuated clamp such as is disclosed. in the United States Patent No. 1,070,815, harem` before referred to.

'To prevent separation of the post und sleevewhen, during transiorlaliou. the une chine-tool is lifted as by means of a rope passed around the column licneath the arm, the sleeve is preferably fitted with one or more studs 9 which project inwardly and engage a shoulder l0 on thepost if. yThis shoulder may be provided hy an annular groove in the periphery of the post.` of as lshown in Fig. 2 it may he provided hy a. separate plateor ring ll secured to the post as by screws 12. y

Secured upon an extension et of the arm l is a motor M which is' operatively connected `to drive a horizontal arm shaft l?) from which power may be taken to rotate the drill-spindle and to feed it vertically in the drillhead. Inasmuch as the consirlirtion of the drill-head and the means for taking power from the shaft lil are well understood by those skilled in the :zi-t and aa powerI (both electric und iiuid pressure) intol the machine-tool and for dislrilmtiiux it lo -the various mechanisms io la.` actuated their by, together with improved i'ncans for supplying cutting lubricant to tht` tool.` all of which is effected in a novel manner. "wluu'cby certain undesirable featln'cs of prior nos.` chines'are eliminated. Thisis attained by meansnowito be described.

Secured within the cap 3'), coaxial `with the post 2 and sleeve 3 is a tube 14: held against endwise movement. in one direction. by nuts and against movement in the opposite direction by a sleeve 11G secured to the tube .lei adjacent its lower end. The sleeve 16 is provided with an annular flange 1il" which abuts the uiulerside of a bearing 1S with the sleeve 3 and forms a. housing .for

Fill

il Tv 'lun lll?) an air-pressure pipe 19, a lubricant or coolant pipe -and electric conductors 2l and '22, the later being adapted to transmit current to the motor M and to a pump-motor N, later to be referred to. Any suitable means may be employed to lock together against relative rotation the sleeve 3 and housing-tube '14. As shown in Figs. 7 and 8 this may be effected by forming slots la and 14b in the opposite sides of the tube and then securing key-blocks 14C and 14; to the upper end or the sleeve with the inner ends of said blocks' extending into said slots The key-blocks may be secured to the upper end ot' the sleeve as by screws 14C. The lower ends oit` the conductors 21 and 22 are connected with annular contact-members Q3 and 24 respectively, supported and insulated trom each other by al disk 25 oit iiber or other non-conducting material fixed to the lower end of the tube 14. An electric current is brought into the column by means ot wires 26 and 27 extending through a portal Q8 in the base oi the post 2. These wires areconnected with contact brushes 29 and 30 respectively, supported by a bracket 31 secured to the base 'of the post. These brushes are held in contact with the annular members 23 and Q4 and therefore a complete electrical connection is maintained between the wires 26 and 27 and the. motors M and N in all ot the adjusted positions of the arm and sleeve about the axis ofthe post 2.

Beneath the column C the base 1 is formed with a reservoir or sump R adapted to hold suitable cutting lubricant. The lubricant is drawn `from the reservoir by a pump P mounted on a bracket 32 carrie-d by the arm. This bracket also serves as a support 'for the motor N connected to operate the pump l, Vhile the pump P is shown and described as l'ieing driven by the motor N it is to be understood that it may conveniently be driven 'from the arm-shaft 13 andwhen this latter drive is utilized the motor N is eliminated. To the intake side of the pump is connected one end of a flexible pipe 33 oit which the other end is connected with the upper end oi the pipe 20 extending through the tube let. The lower end of the pipe 2() is connected with an outwardly and downwardly extending pipe 34 which carries at its lower end a strainer 35 maintained below the level of the oil in the sump R. The base 1 is formed, coaxial with the post 2, with an aperture 36 surrounded by a vertically disposed cylindrical wall 37 projecting upwardly substantially above the oil level. This aperture affords means to permit the introduction of an air pipe 38 coaxial with the column as will later be described. The pipe. 34, due to its angular position, causes the strainer to enter the sump eccentric to the axis of the column and outside of the cylindrical wall 37. Thus as the sleeve 3 and tube 14` are rotated about the axis of the post the st-rainer will describe a circle about the wall 37 and therefore will not interfere with the air-pipe 38.

The pump P is also connected with a `discharge pipe 39 which extends to the drillhead and which may, by a suitable nozzle (not shown), deliver the cutting lubricant to the tool. The discharge pipe is preterably made up of a plurality of sectionssuitably connected together in a. manner permitting the drill-head to be moved lengthwise of the arm et, To permit a continuous running oit the pump even whenthe iiow of lubricant is cut oli at the nozzle, there is pro` rideda return line fi() which is connected at il with the discharge line 39 and `at ai). with the intake side ol the pump. This return line is provided with a relief valve t3 ot conventional iorm which, during thcnormal operation ot the machine, that is when the discharge nozzle is open, prevents the flow olI luln'icant through the return pipe. However, when the lubricant is turned oil' at the work pressure builds up in the discharge pipe and forces open a normally closed spring- `pressed seal la thus permitting a eontinious circulation ot' oil through the pump, out through the iirst section of the discharge pipe and thence throughthe return pipe Zl() hack to the intake side of the pump. Then the lubricant is again turned on at the work the pressure in the line is reduced and the spring closes `the seal #i4 which prevents circulation through thereturn pipe.A The excess lubricant delivered tothe tool flows downwardly to the base and is collected in suitable oil grooves g which conduct it back toward the column. One or more transverse grooves t are provided to lead the oil from the grooves g back into the sump `R Jfrom whence it started its circulation. Adjacent the strainer 35 the pipe 34 is iitted with a suitable check-valve 46 which prevents the oil fronrtlowing from the pipe 20 back into the reservoir when the pump is stopped.

As hereinbeiore stated the sleeve 3 may be' clamped to the post 2 by means ot' a fluid pressure clamping device such as disclosed in United States Patent No. 1,070,815. Fluid pressure to actuate this clamp is preferably brought into the machine-tool through a pipe 4G* which enters the base 1 through an aperture 4&7 beneath the sump. The pipe 46X is provided with an upwardly extending portion 38 which passes through the aperture 36 coaxial with the post 2 and which isconnected, `by means oi a rotatable coupling 49,

with the pipe 19 fixed within the rotatable tube 14. This rotatable coupling permits the pipe 19 to rotate with thesleeve relatively to the pipe 38. The upper end of the pipe 19 is connected by means of a iiexible tube 50, with the clamp actuating means hereinlio l if) ld", L..

Y t0n rod 87.

before referred to. It is to be understood that the wires 26 and 27 and the pipe 16x may extend downwardly through the floor upon which the base isniounted or that they may be covered in any suitable way so as to not interfere with the operator.

4The clamping means, adapted to be actuated by iiuid pressure through the pipe 1S) and tube 5U, is clearly shown in Figs. 11, 12, 13 and 14. The lower end of the sleeve 3 is split vertically and horizontally at 3 and 3l respectively, thereby providing yielding portions 8 and d` adapted to be contracted to cause them to bind upon the post 2. The portions 3 and 3d carry project-ing lugs 3 and: 3f respectively and within the lug 3f is journaled the lower end of a vertically disposed rod 8O upon which is secured an eccentric 81. AV draw bolt 82 is `formed at one `end with a strap which surrounds the eccentric and the other end ot the bolt passes through a suitable aperture in the lug 8 and c-.irries nuts 83. Thus, it will be seen that rotation of the shaft 8O and eccentric 81 will cause the bolt 82 to be4 drawn endwise thereby drawing the flexible portions 3@ and 3d toward each other and causing the sleeve to griptlie post. AThe shaft 8 0 may be rotated either manually by a hand lever 84 or by means of a fluid pressure actuated means 85 which meshes with the teeth of a rack-` bar 853 attached to and movable witha pis- This rod 87 is slidingly fitted within a cylinder 88 supported by the arm and carries within the cylindera piston 89. F luid under pressure passes through the tube 5f) and is controlled by aV valve 90. By manipulation of the valve 90 the tube 50 selectively may be connected, through pipes 91 and 92. with the cylinder 88 at opposite sides of the piston 89. From the foregoing it will he perceived that by suitablemanipulation ot the valve, 90 fluid pressure may be admitted into one end of the cylinder thereby causing the piston to be moved toward the opposite end and, through the rack 8G and .segment 85, cause rotation of the shaft in a` direction to efi'ect clamping of the sleeve. Likewise fluid pressure may be admitted into the other end of the cylinder to reverse the movement of the parts thereby to release the clamp.

Figs. Si and 10 show a modified construc-` tion for maintaining the tube 14 coaxial` with the sleeve 2:3 and for supportingr the rotatable electrical connector upon the tube. In this arrangement the lower end ofthe tube is journaled in a bearing-sleeve G0 fixed to the bearing 18, as by screws 61. `YVithin the lower end of the tube 14e is secured a block (i2 into which `the pipes 19 and 20. are threaded.

The pipes 38 and 84 also connect with the block (i2 and areconnected with the pipes 19 and 2O respectively by passageways oil and 6i.. Secured to the block 62 is a` sleeve (55 having af flange (So which supports the disk Screws (3T threaded into the flange (3G enter apertures (i8 in the disk and thereby transmit to the latter rotary movements of the tube 14. A spacing sleeve G8 surrounds the tube 14 intern'iediate the sleeve 6() and the disk 25. This sleeve 68 is preterably provided with apertures as 69 through which the connectors 21 and 22 may be brought for attachment to the annular' contact members 23 and 24. i

From the `:foregoingfit will be perceived that there has been provided a novel construction and arrangement by means of which power to operate the various mechanisms oi? the machine-tool is brought thereinto and distributed to its points i of ruse without in any way interfering with the operator and which also permits the arm to be rotated about the axis of the post without twisting or otherwise aliecting the power lines. This construction also combines with the arrangeinentof the power linesa new and improved means for continuously lubricating and cooling the drill.

Without l'urther analysis, the foregoing will so fully reveal the gist of this invention that others can, by applying current knowledge, readily adapt it for variouus utilizations by retaining one or more of the features that, `Troni the standpoint ot the prior art, fairly constitute essential characteristics of either the generic or specific aspects of this invention and, therefore, such adaptations should be. and are intended to becomprehended within the meaning and range of` equivalency of the following claims:-

Having thus revealed this invention, we claim as new and desire to secure the following combinations and elements, or equivalents thereof, by Letters lPatent of' the lnitcd States:

l. A radial-drill combining a base; a post; a sleeve rotatably mounted on said post; an arm supported by said sleeve; fluid actuated means carried by said arm for clamping said sleeve to said post; a shaft extending lengthwiseoi said arm; a motor supported by the arm"operatively connected to rotate said shaft: a lubricant pump carried by the arln;` a motor carried by the arm operatively connected .to drive said pump; fluid, lubricant and electrical conductors extending upwardly through said post and connected with said clamp, pump and motors respectively and soarranged as not to become twisted upon rotation of said sleeve; and means adjacent the lower end of the post connecting each ofsaid conductors with a source of supplyn luc 2. In a radial-drill a base; a post supported thereon; a sleeve rotatable on said post; a fluid pressure delivery pipe and an electrical conductor extending vertically through said post and rotatable with said sleeve; means adjacent the base for supplying an electric current to said electrical conductor, said means including a rotatable contact; and means for supplying fluid pressure to said fluid pressure pipe, said last named means comprising a non-rotatable fluid pressure supply pipe and a rotatable coupling connecting said supply pipe with said fluid pressure delivery pipe.

3. A radial-drill as set forth in claim l, characterized by this, that the conductors extend upwardly through and rotate with a tube extending substantially the full length oi the post and supported by the sleeve and maintained coaxial with the post. j

4. A radial-drill combining a base; a post secured upon the base; a sleeve rotatably mounted on said post; a fluid actuated clamp for securing said sleeve to said post; an arm carried by said sleeve; a motor supported by said arm; an electrical conductor and a fluid pressuse line entertng said post adjacent the base; and means operatively connected with said electrical conductor and fluid pressure line for transmitting electrical current and fluid pressure up through said post and then to said motor and clamp respectively, said means each including a rotatable connection located within said post adjacent said base and of' which one part is stationary with said base and another part is rotatable with said sleeve.

5. In a radial-drill, a base provided with a reservoir and a vertical aperture; a post secured upon said base with its axis substantially in line with said aperture; a lubricant pipe extending upwardly through said post adjacent the axis thereof, said pipe being provided with an off-set end entering said reservoir at one side of said aperture; and means permitting said olii-set end to be rotated horizontally in said reservoir about said vertical aperture.

6. In a radial-drill; a base provided with a reservoir and a vertical aperture; a post secured upon said base with its axis substantially in line with said aperture; a fluid pressure pipe extending through `said aperture and upwardly through said post; a lubricant pipe extending through said post adjacent said fluid pressure pipe and having au off-set end entering said reservoir at one side of said aperture; and means permitting said oli-set end to be rotated horizontally in said reservoir about said aperture and said fluid pressure pipe extending therethrough.

7. In a radial-drill, a base provided with a reservoir and a vertical aperture; a pest secured upon said base with its axis substantially in line with said aperture; a non-rotatable` fluid pressure pipe having a portion in line with said aperture; a second fluid pressure pipe rotatably supported lengthwise within said post; a rotatable connection between said pipes; a lubricant pipe extending through said post adjacent said second fluid pressure pipe `and having an off-set end entering said reservoir at one side of said aperture; and means permitting said lubricant pipe and its off-set end to be rotated about said fluid pressure line.

8. In a radial-drill, a base provided with a reservoir and a vertical aperture; a post secured to said base with its axis substantially in line with said aperture rand provided adjacent its lower end with a portal, a. fluid pressure line extending through said aperture and upwardly through said post; a lubricant conduit extending lengthwise through said post and having its lower enl entering said reservoir; an electrica-l conductor extending vertically through said post and connected at its lower end to one portion of a rotatable electrical contact; and an electrical conductor extending through said portal and operatively connected with another portion of said rotatable Contact; and means permitting a continued rotation of said lubricant conduit about said fluid pressure line.

9. In a radial-drill, a base; a post secured thereto; a reservoir formed in said base; a sleeve rotatably mounted on said post; a. tube secured to said sleeve adjacent its` upper'end and extending downwardly within said postcoaxial therewith; lubricant pipe and a plurality of power conductors extending through said tube; means adjacent the lower end of the tube for connecting each of said powerl conductors with a source of power, said means each including a rotatable connection; means to connect said lubricant pipe with said reservoir and including an off-set portion entering said reservoir at one side of one of said power conductors; and means for connecting the upper ends of said conductorswith devices adapted to be actuated by the power flowing therethrough and for conducting the lubricant from said lubricant pipe to the usual drill point. j

l0. In a radial drill, a base; a post secured thereto and provided adjacent its lower end with a portal; a sleeve rotatably supported on said post; an arm carried by` said sleeve; a vertically disposed tube secured to said sleeve and rotatably journaled within said post and extending substantially the full length of said post; a plurality of elec- 1 trical conductors extending through said tube.; a plurality of annular electrical contact-members carried by the lower end kof said tube one of which isconnected with each of said conductors; a bracket remov- (ill.

ablysupported `by said post and extending through said portal; a plurality of electrical conductors entering said post through said portal; and a pair of contact brushes car ried by said bracket and each connected with one of said lastnamed conductors and main` tained in contact with said annular members to etlect a complete electric circuit through said post in all ot' the horizontal positions of said sleeve about said post.

ll.` In a radial-drill; albase provided with a reservoir; apost secured thereto; a sleeve rotatably mounted on said post; a clamp to secure said sleeve to said post; an'arni car` ried by said sleeve; a shaft extending lengthwise of saidarni; a `motoroperatively connected to drive said shaft; a lubricant pump; a `motor operatively connected to drive said pump; fluid-actuated clamp controlling means, said motors; pump and clamp controlling means being carried by said arm and rotatable therewith; an electrical conductor extending upwardly through said postand connected to said motors; a. fluid pressure line extending upwardly through said post and connected with said clamp; a `lubricant conduit entering said reservoir and extending upwardly through said post and connected with said pump; and means to maintain Vsaid electrical conductor, tluid pressure line and lubricant conduit substantiall coaxial with said post and to cause them to rotate with said sleeve.

l2. A `radial-drill.combining a` base provided with a reservoir; a post secured to said base; a sleeve rotatably supported on said post; a plurality of power lines and a lubricant conduit extending longitudinally through said post and rotatable with said sleeve; non-rotatable means adjacent the lower ends thereof for supplying power to said power lines and for supplying lubricant to said conduit 'from said reservoir, and means to maintain said power lines and conduit substantially coaxial with said post and for preventing twisting thereof' during the rotation of said sleeve.

13. In a radial drill; an upright column provided adjacent its lower end with a portal; a radial arm rotatably carried by said column; annular electrical contact members located within said column adjacent said portal and rotatable with said arm",n a n'iotor mounted on said arm; au electrical conductor connected to said motor and extending downwardly through said column and con nected to said annular contact members; a bracket removably attached to said column and projecting through said portal; contact brushes carried by said bracket and maintained in contact with said annular contact members; and electrical conductors eittendf ing through said portal and attached to said brushes.

14. Inaradial-drll, an upright post; av

neiiegeoa sleeve rotatably mounted thereon; a [luid pressure actuated clamp rotatable with said sleeve 'for loekingtogether said post and sleeve; a radial arm carried by said sleeve; a motor carried by said arm; a non-rotataliile electrical conductor and a non-rotatable fluid pressureconveyor entering said post adjacent its lower end; an electrical conductor and a fluid pressure conductor emerging 'from said sleeve adjacent its upper end and connected with said motor and clamp re-` spectively and adapted to partake of rotary movements with said sleeve; and rotatable connections within said post 'for connecting together respectively said electrical conductors and said fluid pressure conveyors.

l5. In a radial drill, a column; an arm rotatably 'supported by said column; a fluid actuated device and an electrically actuat ed device erteriorly of said column and rotatable with said arm; means for supplyingr power to said devices, said means comprising fluid pressure line and an electric power line entering said column adjacent its lower end; extending upwardly through the column and emerging adjacent its upper end and thcnconnected to said fluid pressure and electrically actuated devices respectively; and a klubricating system conlprising a reservoir beneath said column,` `and a lubricant pipe extending upwardly through said column and located eccentrically to said fluid pressure line and having a portion entering `said reservoir, said reservoir pipe being arranged to permit ol its rotation about said fluid pressure line.

lo. In a adial-drill, a base provided with a reservoir; a post secured to the base above said reservoir; a sleeve rotatably mounted on said post; a tube connected to said sleeve and extending coaxially through said sleeve and post substantially the entire length oi. said sleeve; and power conveying means and a lubricant pipeentering said r ervoir extending through said tube and rotatable with said tube and sleeve.

1T. In a radial-drill, a base provided with a coolant reservoir; a Vpost secured to said base; a sleeve rotatably supported on said post; a coolant conduit rotatable. with said sleeve and extending from said reservoir upwardly through said post substantially coaxially therewith; and out through the top thereof; a pump rotatable 'with said sleeve connected with said conduit and adapted to draw coolant therethrough and to deliver it to the, usual drilhpoint;'and means to return the used coolant to the reservoir.

18. In a radial-drill, a base provided `with a coolant reservoir; a post scoured to said base; a sleeve rotatably journaled on said post; a tube extending coaXially through said post and sleeve and rotatable therewith; `electrical conductors and a fluid preslill sure hne entering said post adjacent ite lower end and extending through said tube und rotatable therewith; u Coolant conduit rotatable with Said Steeve and exteudhv' .trom seid 'eeelvoh upwardly through sa tube; electrically actuated means and Huid pressure means, rotatable Wxtn sind sleeve In witness whereof, we have hereunto subscribed our names.

DAVID C. KLAUSMEYER. VICTOR JULIEN.

Images